11541990 has 16 divisors (see below), whose sum is σ = 27700848. Its totient is φ = 3077856.

The previous prime is 11541989. The next prime is 11541991. The reversal of 11541990 is 9914511.

11541990 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11541989) and next prime (11541991).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 384733 = 11541990 / (1 + 1 + 5 + 4 + 1 + 9 + 9 + 0).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11541991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192337 + ... + 192396.

It is an arithmetic number, because the mean of its divisors is an integer number (1731303).

Almost surely, 2^11541990 is an apocalyptic number.

11541990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11541990 is an abundant number, since it is smaller than the sum of its proper divisors (16158858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11541990 is a wasteful number, since it uses less digits than its factorization.

11541990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384743.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 11541990 is about 3397.3504382092. The cubic root of 11541990 is about 225.9922596352.

The spelling of 11541990 in words is "eleven million, five hundred forty-one thousand, nine hundred ninety".